query: = elastic.NewTermQuery ("category_id", categoryId)
result, e: = ES.GetEs (). Search (). Index ("group_category"). Type ("_ doc") .query (query) .sort ("img_date", false) .Do (context.Background ())
in this way, the search returns all the fields. I want to return only the specified fields. How should I set them? For example, I just want to return to the id field and ask for guidance from all of you!
package main
import (
"fmt"
"github.com/olivere/elastic"
"golang.org/x/net/context"
)
func main() {
client, err := elastic.NewClient(
elastic.SetURL("your es"),
)
if err != nil {
// Handle error
}
fsc := elastic.NewFetchSourceContext(true).Include("field1", "field12") //.Exclude("*.description")
query := elastic.NewTermQuery("category_id", 1)
result, err := client.Search().
Index("yourindex").
Type("yourtype").
Query(query).
FetchSourceContext(fsc).
Sort("img_date", false).
Pretty(true).
Do(context.Background())
if err != nil {
panic(err)
}
for i, r := range result.Hits.Hits {
fmt.Println(i, string(*r.Source))
}
}